stm32f410 ADC monitor a sinewave

[Bogdan]

Posted on December 07, 2016 at 21:08

Hello all,

i am working on a project which implies the control of a BLDC motor in 3 phases.

For this type of motor the switching of the phases must be sync with monitoring the 'back-emf' signal from the unpowerd phase.

My question would be, what is the common practice to measure a zero falling edge signal at 30 degreese after the sinewave is passing down trough 0. A ADC triggerd by a fixed timer value?

I dont have very much experience with ADC's in tandem with timers

[Walid FTITI_O]

Posted on December 08, 2016 at 12:19

Hi

Anton.Bogdan

,

I recommedn this user manual

http://www.st.com/content/ccc/resource/technical/document/user_manual/6b/fd/49/38/73/a2/4a/9c/DM00072pdf/files/DM00072pdf/jcr:content/translations/en.DM00072pdf

which explain the hole theory and how to Convert BEMF of floating phase via ADC and store in variable (bemfsample)

-Walid F-